1 & x_1 - x_0 & x_1^2 - x_1 x_0& \dots & x_1^n - x_1^{n-1} x_0\\
The episode is believed to be one of the largest seabird wrecks in recent European history.
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- assignment: Array of booleans. If the formula is satisfiable provide an assignment for each variable from 1 to N. If the formula is not satisfiable this field is null.